Projection apparatus.



S. SCHULHOFF. PROJECTION APPARATUS.

APPLIGATION FILED FEB. 2o, 1912.

Patented Aug. 19, 1913.

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WITNE'ssEs A TTORNE Y SAUL SCHULHOFF, OF PHILADELE'HIA, PENNSYLTANIA.

'EROJECTION APPARATUS.

Specification of Letters Patent.

Patented Aug. 19,1913.A

Appncanon area Febr-ilary 2.o, 1912. seriai No. 678,765.

To a?? l107mm if m 0 2/ concern.' Y Beit known that I. SAUL SCHULHOFF, a citizen of the UnitedStates, residing at the, city of Philadelphia, in the county of Philadelphia and State of APennsylvania,l have invented certain new and usefullniprovements in Projection i-tpparatug-of which the following is *specitient-ion.V

My invention relates to api-ejection apparatus in which the' light generated by suitable illuminating ineaiis is presented to. traveling objects whereofthe images are projected directly upon a surface or screen external to? the apparatus; and my invention further relates in connection with such an apparatus, to the employment therein of an opaque perforated band along the body of which objects are printed, in sequence, so as to `lappear in their proper relationship to each other on such band in order that when exhibited on a surface or screen, the illumined magnified images of which will be directly -thrown in proper sequence relationship onto the said surface or screen.

M v invention, generally stated', consists first, of an apparatus arranged so that a beam of light is presented `directly at the exposed area of the objects of-anopaque band in passage lthrough a lens-house, the illumined images of'which objects are projected' b v means of the direct' reflected rays of said beam of .light through the lens-ofvv said house directly onto a distant 'surfaceI or screen; and second, of an adjustable apparatus arranged so that a beam of light is,V thrown upon'. the` entire area of objects in sequence arrangement of'an opaque band arranged to travelithrough a guide' of the lens-house; and the said opaque band having the said objects thereon in positive sequence arranged relationship, and so thatv the images of which are' projected by directreflection of said rays of iight through said lens, onto a distant surface or screen.

lThe natureand scope. of my present in- ?ention will be more fully understood'from the follmving descriptit'in taken in connection'with the'accoi'11p:iiij,'iiig drawings forin- -ing part hereof, in which- Figure` l, is a top or plan view, partly iii.

Fig. Q2, is a side elevational View partly in broken section of the light-house and' of theniechanisni in connection with the lenshouse, for feeding and controlling the feed of the opaque band therethrough; and Fig. 8, is a. front elevatit'inal View of -thelens- .houseand feed operating mechanism of the opaque band.

lamp-house having extending ytherefrom preferably a cone-shaped light dei'iector tube a, in' which the derived illumination from preferably, an are-lamp -Y ta, lis deflected through the said tube into the lens-house 5, having a vertical guidel or way' b, for an opaque edge perforated band 7, to travel, when iinpelledtherethrough. The lamphouse 3, is pivot-ally supported at 4, from the outside of the 'lens-house 5,' as shown in 'Fig'. l, so that thereby the sai'd lamp-house may be quickly shifted, as desired, to change the-'direct reflection of the beam of' light onto the traveling opaque strip of the house effects on the distant screen. The guide or way L, is recessed at 1 .and 7)?, as illustrated' in Fig. vl, for a purpose `to be. presently described. he opaque ban-d 7, along the body of the same is provided 'with objects printed, in sequence, so as tooecupy proper relationship to each other along or throughout the saine.

The lens-house 5, in the rear, 'at the top fixed or movable rolls andr, placed side by side in direct connection with the internal guide Ao. as clearly shown in Fig. Q, for aiding in the feedinguniformly of the band 'i',.to, through and from the guide or-way of the house 5 by mechanism in a preferred form to be presentlyexplained. The front wall of the house 5, is provided with an opening oi", ha ving alens 5a., therein,through which lens opening the ,movable4 objectsl in sequence of the band 7, as clearly shown in Figs. l-and il, are exposed, and by .reflected rays of the said beam of lightl ,fdetiected directly through the said tube a., onto 'said objects so that the images of such movable objects of the said band 7, illumined and magnified in form, are thrown dii'eetly onto the distant screen or surface S, as shown in Fig. l. y

E), is a double toothed feed-wheel located in rear of the lens-house 5, for engaging the edge perforatio-ijis of the opaque band 7. This Wheel is mounted on a cross-shaft 1],- iournaled -in the respective side walls of the Referring to' the drawings 3, is an arc 5, which is required for desirable better and bottoni thereof, is arranged witheither and a sprocket d2,

, ries a cam-shaped pin-wheel d, for periodid5, interiorly of the house 5, as shown in Figs. 2' and 3, a friction roll shown.

dT, is arranged friction roll e, jour-` complementally -to a secured to the house naled to a bracket el,

and located. outside ofthe same, Fig. 2, but.

said roll e, extending into the house and between Awhich friction rolls e and el?, the opaque objective band 7, passes when fed between the same, and which rolls in action tend to hold Ithe band 7, taut beyond the ex- -vposing point in the travel of said band through the guide or' way b, and until leavhou'se .5, and received on a lay-up reel `or other suitable device therefor, not

a pinion (Z9, which -A 'shaft all", carries rlhis shaft also carmeshes with a gear rijm.,

when a pin cally turning the star-wheel al,

of this wheeld11',jr'ides in one of the series slits ,of the wheel all, to intermittently or which meshes with a pinion f2,

step-wise feed the band-7, vertically downward through the guide or way b, 'of the house 5,- when the hand-crank d, is o perated mounted o n a shaft alla, carrying a.

gear 1.4,'whi'ch meshes with the pinion df),

.on the shaft di".

Beneath thelens-tube b5, of the lens-house 5, is arrangeda post f, to the extremity' of which is movably connected a shutter 10, of any preferred type. Thisshutter is preferablyl provided with a peripheral rack4 f-, mounted on a shaft f3,`supported vfrom a bracket f4, secured to one side of the housel 5'. On the at the outer extremity of the saine,

is mounted a sprocket-wheel f5, carrying a chain ff?, connected also with the sprocket d2, of the said Shaft d.

By the foregoing arrangement of the operating mechanism of both shutter l0, and

opaque band 7, respectively, timed exposure.

of the objects ofthe band 7, and step-wise feeding are effected by the iniuence of the direct rays of the beam of light 4,*at the exposing point of the lens-tube c5, and its reflection' then direct of the magnified images accomplished on the distant screen or the aid of said lens 5a, land surfa-ce 8,. by

the said opaque band 7 when the objects of v an angle into opa y cally moving opaque images thereof are directly reliectedthrough are arranged positively in respect toeach other on the said band.

It will be observed in `y my invention as y shown and described, that the bearnof 'light thrown by the lamp 4, is directly against the objects on the guide and that such is re-4 A flected therefrom' through the lens 5a, di-

rectly onto the distant screen 8, without the use of internal mirrors or the like'` in the house 5, thus simplifying the arrangement for derivingeifective work therefrom.

Having thus described the nature and objects of my invention, what I claimas. new

and desire to secure by Letters vPatentiszl. The combination of a lens-house having a'vertical guide for asequence printed opaque band adapted to be impelled through said guide', an adjustable lens-support located outside of said house and extending at the side of saidhouse, a light emitting body arranged in rear thereof, said lens adapted to -concentrate the bea-m of .light directly onto the vertically -moving que band so that images thereof'are directly reflected through the frontA lens opening of said house onto a distant screen and means to feed step by step and thereby to. control the positive movement of said band,

substantially as and for the purposes described.

'2. The combination ing a vertical guide for a sequence printed opaque band adapted to be iinpelled through said guide, an adjustable lens-support located outside of said house and exten-ding at an angle into the side of said house, a light emitting body arranged in rear thereof, said 'lens adapted 'to concentrate the beam. of

light to be thrown directly onto the vertiband so that the the front lens yopening of said house onto a distant screen, a perforated shutter ailranged in advance of the lens opening of -said lens-house and means connected with `said house to feed step by step and to control thereby the travel of said opaque band and to simultaneously therewith cause rotary movement of said shutter, sulistantially as and forthe purposes described.

of a lens-house hav? In witness whereof, l have hereunto set my signature in -the presence of the two sub scribing witnesses hereto.

SAE )L SCHULHFF.

Witnesses f' J. WALTR DouGLAss, THOMAS SMITH. 

